Add a double click application

That can be opened by clicking twice.

Closes #34

Also:
+ adjust text color in tutorial
+ some other small adjustments

app/src/main/java/com/finnmglas/launcher/ChooseActivity.kt

@@ -8,7 +8,6 @@ import android.view.WindowManager
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
 import androidx.recyclerview.widget.LinearLayoutManager
-import androidx.recyclerview.widget.RecyclerView
 import com.finnmglas.launcher.choose.AppsRecyclerAdapter
 import com.finnmglas.launcher.extern.*
 import kotlinx.android.synthetic.main.activity_choose.*

app/src/main/java/com/finnmglas/launcher/MainActivity.kt

@@ -177,6 +177,11 @@ class MainActivity : AppCompatActivity(),
 
     override fun onLongPress(event: MotionEvent) { openSettings() }
 
+    override fun onDoubleTap(event: MotionEvent): Boolean {
+        launchApp(doubleClickApp, this)
+        return false
+    }
+
     // Tooltip
     override fun onSingleTapConfirmed(event: MotionEvent): Boolean {
         when(settingsIconShown) {
@@ -213,7 +218,6 @@ class MainActivity : AppCompatActivity(),
 
     /* TODO: Remove those. For now they are necessary
      *  because this inherits from GestureDetector.OnGestureListener */
-    override fun onDoubleTap(event: MotionEvent): Boolean { return false }
     override fun onDoubleTapEvent(event: MotionEvent): Boolean { return false }
     override fun onDown(event: MotionEvent): Boolean { return false }
     override fun onScroll(e1: MotionEvent, e2: MotionEvent, dX: Float, dY: Float): Boolean { return false }

app/src/main/java/com/finnmglas/launcher/extern/Functions.kt

@@ -29,6 +29,7 @@ var rightApp = ""
 var leftApp = ""
 var volumeUpApp = ""
 var volumeDownApp = ""
+var doubleClickApp = ""
 
 var calendarApp = ""
 var clockApp = ""
@@ -40,10 +41,10 @@ var vibrantColor = 0
 
 /** REQUEST CODES */
 
-val REQUEST_PICK_IMAGE = 1
+const val REQUEST_PICK_IMAGE = 1
-val REQUEST_CHOOSE_APP = 2
+const val REQUEST_CHOOSE_APP = 2
-val REQUEST_UNINSTALL = 3
+const val REQUEST_UNINSTALL = 3
-val REQUEST_PERMISSION_STORAGE = 4
+const val REQUEST_PERMISSION_STORAGE = 4
 
 /** Animate */
 
@@ -210,6 +211,8 @@ fun loadSettings(sharedPref : SharedPreferences){
     volumeUpApp = sharedPref.getString("action_volumeUpApp", "").toString()
     volumeDownApp = sharedPref.getString("action_volumeDownApp", "").toString()
 
+    doubleClickApp = sharedPref.getString("action_doubleClickApp", "").toString()
+
     calendarApp = sharedPref.getString("action_calendarApp", "").toString()
     clockApp = sharedPref.getString("action_clockApp", "").toString()
 

app/src/main/java/com/finnmglas/launcher/settings/SettingsFragmentApps.kt

@@ -41,6 +41,7 @@ class SettingsFragmentApps : Fragment() {
             setButtonColor(fragment_settings_apps_choose_right_btn, vibrantColor)
             setButtonColor(fragment_settings_apps_choose_vol_up_btn, vibrantColor)
             setButtonColor(fragment_settings_apps_choose_vol_down_btn, vibrantColor)
+            setButtonColor(fragment_settings_apps_choose_double_click_btn, vibrantColor)
 
             setButtonColor(fragment_settings_apps_btn, vibrantColor)
             setButtonColor(fragment_settings_apps_install_btn, vibrantColor)
@@ -53,6 +54,7 @@ class SettingsFragmentApps : Fragment() {
         fragment_settings_apps_choose_right_btn.setOnClickListener{ chooseApp("rightApp") }
         fragment_settings_apps_choose_vol_up_btn.setOnClickListener{ chooseApp("volumeUpApp")}
         fragment_settings_apps_choose_vol_down_btn.setOnClickListener{ chooseApp("volumeDownApp")}
+        fragment_settings_apps_choose_double_click_btn.setOnClickListener { chooseApp("doubleClickApp") }
 
         // App management buttons
         fragment_settings_apps_btn.setOnClickListener{

app/src/main/res/layout/activity_firststartup.xml

@@ -65,7 +65,6 @@
         android:layout_height="wrap_content"
         android:gravity="center"
         android:onClick="clickAnywhere"
-        android:textColor="#ccc"
         android:textSize="64sp"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"

app/src/main/res/layout/fragment_settings_apps.xml

@@ -157,6 +157,29 @@
 
         </TableRow>
 
+        <TableRow
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:gravity="center">
+
+            <TextView
+                android:id="@+id/fragment_settings_apps_choose_double_click_text"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:paddingLeft="10sp"
+                android:paddingRight="10sp"
+                android:text="@string/settings_choose_double_click"
+                android:textSize="20sp" />
+
+            <Button
+                android:id="@+id/fragment_settings_apps_choose_double_click_btn"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/settings_choose_btn"
+                android:textAllCaps="false" />
+
+        </TableRow>
+
     </TableLayout>
 
     <Button

app/src/main/res/values-de/strings.xml

@@ -21,6 +21,7 @@
     <string name="settings_choose_right">Rechtswischen</string>
     <string name="settings_choose_vol_up">Lautstärke +</string>
     <string name="settings_choose_vol_down">Lautstärke -</string>
+    <string name="settings_choose_double_click">Doppelklick</string>
 
     <string name="settings_choose_btn">App wählen</string>
     <string name="settings_select_launcher">Launcher wählen</string>

app/src/main/res/values-fr/strings.xml

@@ -21,6 +21,7 @@
     <string name="settings_choose_right">Balayez droit</string>
     <string name="settings_choose_vol_up">Monter volume</string>
     <string name="settings_choose_vol_down">Baisser volume</string>
+    <string name="settings_choose_double_click">Double clic</string>
 
     <string name="settings_choose_btn">Choisir App</string>
     <string name="settings_select_launcher">Choisir Launcher</string>

app/src/main/res/values/strings.xml

@@ -29,6 +29,7 @@
     <string name="settings_choose_right">Swipe Right</string>
     <string name="settings_choose_vol_up">Volume Up</string>
     <string name="settings_choose_vol_down">Volume Down</string>
+    <string name="settings_choose_double_click">Double Click</string>
     <string name="settings_choose_btn">Choose App</string>
 
     <string name="settings_select_launcher">Select Launcher</string>